I have spawned a task named "FirmwareProgramming". It crashes for
unknown reason only sometimes. Is the above information useful for
error analysis ? How can I track down to the line of code where the
problem occurred ?

Or does it just say "access to 0xcc33cc30 no allowed" ?

Regards
Enie

10-02-2007, 09:10 AM

unix

Re: SW Crash Analysis - Instruction Access Exception

Hi:

Type tt in the shell and you'll get a task trace and the addres of the
crash. Still could be a problem. Obviously, somewhere in
FirmwareProgramming called something that jumped to a bad address. The
trace might give you a hint where it was.

If you needed help matching up with source, you'll have to either step
or use the Tornado "show mixed", or use objdumpppc on the link output
to see where stuff is (after seeing where FirmwareProgramming was
loaded in memory.

Good luck,
lc
Enie45 wrote:[color=blue]
> Hello,
>
> I have the following output on the TShell
>
> ---------------------------------------------------------------------
> instruction access
> Exception next instruction address: 0xcc33cc30
> Machine Status Register: 0x4000b030
> Condition Register: 0x2000c084
> Task: 0x5797fa0 "FirmwareProgramming"
> ---------------------------------------------------------------------
>
> I have spawned a task named "FirmwareProgramming". It crashes for
> unknown reason only sometimes. Is the above information useful for
> error analysis ? How can I track down to the line of code where the
> problem occurred ?
>
> Or does it just say "access to 0xcc33cc30 no allowed" ?
>
> Regards
> Enie[/color]

06-16-2009, 12:29 PM

cr_harishkumar

Re: SW Crash Analysis - Instruction Access Exception

Hi,

I have got similar "Instruction Access" exception. But unfortunately this happened on remote system where I could not get task traces (tt).